Kitchen cabinet organization help?

just moved into a new house and having some trouble organizing a few cabinets.

I'm trying to be really good about keeping things well organized and uncluttered.

the first is a deep (2 ft) full height cabinet:
it is a bit too narrow for larger sheet pans or use for pantry items because of its depth - i don't want stuff getting shoved into the back, and forgotten about. so far, the bottom seems good for appliance storage, but the rest, not sure..

The second cabinet is an upper diagonal corner cabinet - it has these odd trapezoid corners where things can get lost in, and is also very deep:

Any suggestions on how to make efficient, but uncluttered use of these spaces?

The bottom part of the big cupboard would make a great pantry with the addition of some slide out shelves which are not that expensive and easy to install. If you do not need it for broom and vacuum storage. The upper cabinet could be useful for large pans and canning equipment that is not used all the time since you would need a step stool.

The upper corner cabinet in my kitchen is where I keep all of my good dishes and serving dishes and even glassware as these items are not used often. We downsized by giving away our china cabinet. Again I access these items with a stepping stool so no problem when they are needed.

The fact that you have two electric plugs right there in the corner is actually a great place to keep the small electric items you use all the time.